There are four floors. Top floor has contemporary art from the 20th century (impressionist, abstract, cubist, etc.). What was neat is that my sister noticed that two of the artists displayed were her UCLA professors. (Don't ask me their names, I can't recall.)
Third floor had Mexican pottery with items from Western Mexico. My sister pointed out that the figurines were easily sexed due to the phallus on the male figurine, and the vulva on the female figurine.
The second floor was a mish-mash of stuff. There was one section organized as Native American baskets, with work from Apache, Cahuilla, and other tribes. There was a large collection of George Montgomery work (paintings, furniture, and movie posters of him). There was a science section with live desert tortoises and information regarding tortoises and their habitat. There were other live desert animals that were in cages and information regarding them. There was also a small section on the first desert people. There was the work of Berkeley artist Deborah Oropallo that was extremely contemporary. Lastly, there was a bunch of furniture from art collector William Holden's home that was put into a section. This particular section was filled with furniture from China, Tibet, Thailand, Ethiopia, Nigeria, India, Greece, Egypt, and the Middle East. I wish this area was organized better, but it appeared that it was organized according to the way it was set up in his house by room.
The first floor was filled with Mexican art. Early works of Jose Orozco, Diego Rivera, and David Siquieros. There was also an architectural photo gallery.
I thought we would be in and out of the museum in less than two hours, but we got there around 2:30pm and stayed until they kicked us out of the museum at 5pm. We even got in for $3.50 each with our student IDs.